Anders Behring Breivik, the Norwegian man who confessed to killing 69 people at an island youth camp has reconstructed his actions for police at the crime scene. Police said they took Breivik, 32, back to Utøya on Saturday for a hearing about the 22 July attacks, when he shot dozens of people dead on the island after killing eight people in Oslo with a bomb.

He described the killings in detail during an eight-hour trip to the island, prosecutor Paal-Fredrik Hjort Kraby said. "The suspect showed he wasn't emotionally unaffected by being back at Utøya … but didn't show any remorse," he added.

Images of the reconstruction published in the Norwegian daily VG show Breivik pretending to fire shots into the water where panicked teenagers had tried to escape on 22 July.

The hearing took place amid a security operation that aimed to avoid escape attempts by Breivik and protect him against potential avengers.

Breivik's lawyer said he has admitted to the attacks, but denies criminal guilt because he believes the massacre was necessary to save Norway and Europe from Muslims, and to punish politicians who have embraced multiculturalism.

Initial speculation suggested others were involved in the attacks, but prosecutors and police said they are certain Breivik planned and committed them alone.

Breivik faces up to 21 years in prison if convicted on terrorism charges. If he is still considered a danger to the public after serving his sentence, an alternative custody arrangement may be found. could keep him behind bars indefinitely.